:root{
  --bg:#0f1013;
  --bg-soft:#15171c;
  --panel:#1a1d23;
  --panel-2:#20242b;
  --line:#2a2f38;
  --txt:#e9e6df;
  --txt-dim:#9aa0ab;
  --txt-mute:#6b7280;
  --cream:#f3efe6;
  --accent:#d98e4a;
  --accent-2:#c47a38;
  --ok:#5fbf8a;
  --radius:16px;
  --shadow:0 10px 40px -12px rgba(0,0,0,.6);
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Times New Roman",serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif;
  --mono:"SF Mono",ui-monospace,"JetBrains Mono",Menlo,Consolas,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:var(--sans);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(217,142,74,.10), transparent 60%),
    radial-gradient(900px 500px at -10% 100%, rgba(95,191,138,.06), transparent 55%),
    var(--bg);
  color:var(--txt);
  -webkit-font-smoothing:antialiased;
}
.app{display:flex;height:100vh;overflow:hidden}

/* ---------- SIDEBAR ---------- */
.sidebar{
  width:276px;flex-shrink:0;
  background:linear-gradient(180deg,var(--bg-soft),#121418);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:18px 14px;gap:14px;
  transition:margin-left .25s ease;
}
.sidebar.hidden{margin-left:-276px}
.brand{display:flex;align-items:center;gap:11px;padding:4px 6px 2px}
.logo{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--accent),var(--accent-2));
  color:#1a1206;font-family:var(--serif);font-weight:700;font-size:22px;
  box-shadow:0 6px 20px -6px rgba(217,142,74,.7);
}
.brand-txt{display:flex;flex-direction:column;line-height:1.15}
.brand-txt strong{font-family:var(--serif);font-size:19px;letter-spacing:.2px}
.brand-txt span{font-size:11.5px;color:var(--txt-mute);letter-spacing:.3px}

.new-chat{
  width:100%;padding:11px 14px;border-radius:12px;cursor:pointer;
  background:var(--panel-2);color:var(--cream);border:1px solid var(--line);
  font-size:13.5px;font-weight:600;text-align:left;
  transition:.18s;
}
.new-chat:hover{background:#262b34;border-color:#3a4150}

.threads{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:3px;padding:2px}
.thread{
  display:flex;align-items:center;gap:9px;padding:9px 11px;border-radius:10px;
  font-size:13px;color:var(--txt-dim);cursor:pointer;transition:.15s;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.thread:hover{background:rgba(255,255,255,.04);color:var(--txt)}
.thread.active{background:rgba(217,142,74,.12);color:var(--cream)}
.thread .dot{width:6px;height:6px;border-radius:50%;background:var(--txt-mute);flex-shrink:0}
.thread.active .dot{background:var(--accent)}

.side-foot{display:flex;flex-direction:column;gap:12px;padding:12px 6px 2px;border-top:1px solid var(--line)}
.plan-badge{
  align-self:flex-start;font-size:11px;color:var(--accent);
  background:rgba(217,142,74,.12);border:1px solid rgba(217,142,74,.3);
  padding:4px 10px;border-radius:20px;letter-spacing:.3px;
}
.mini-usage{display:flex;flex-direction:column;gap:6px;font-size:11.5px;color:var(--txt-dim)}
.bar{height:5px;border-radius:4px;background:#2a2f38;overflow:hidden}
.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--accent-2));border-radius:4px}
.muted{color:var(--txt-mute)}
.small{font-size:11.5px;line-height:1.5}

/* ---------- MAIN ---------- */
.main{flex:1;display:flex;flex-direction:column;min-width:0}
.topbar{
  height:60px;flex-shrink:0;display:flex;align-items:center;justify-content:space-between;
  padding:0 20px;border-bottom:1px solid var(--line);
  background:rgba(15,16,19,.6);backdrop-filter:blur(14px);
}
.topbar-left,.topbar-right{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:36px;height:36px;border-radius:10px;border:1px solid transparent;background:transparent;
  color:var(--txt-dim);font-size:16px;cursor:pointer;transition:.15s;display:grid;place-items:center;
}
.icon-btn:hover{background:var(--panel-2);color:var(--txt);border-color:var(--line)}

.model-pick{
  display:flex;align-items:center;gap:9px;padding:7px 12px;border-radius:11px;
  background:var(--panel);border:1px solid var(--line);
}
.status-dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 8px var(--ok)}
#modelSelect{
  background:transparent;border:0;color:var(--txt);font-size:13.5px;font-weight:500;
  font-family:var(--sans);cursor:pointer;outline:none;
}
#modelSelect option{background:var(--panel-2);color:var(--txt)}

.token-pill{
  display:flex;align-items:center;gap:7px;font-size:12.5px;font-family:var(--mono);
  color:var(--txt-dim);background:var(--panel);border:1px solid var(--line);
  padding:7px 13px;border-radius:20px;
}
.token-pill .sep{color:var(--txt-mute)}
.token-pill .cost{color:var(--accent)}

/* ---------- CHAT ---------- */
.chat{flex:1;overflow-y:auto;padding:36px 0 8px;scroll-behavior:smooth}
.chat::-webkit-scrollbar{width:9px}
.chat::-webkit-scrollbar-thumb{background:#2c313b;border-radius:9px;border:2px solid var(--bg)}

.welcome{max-width:640px;margin:6vh auto 0;padding:0 28px;text-align:center}
.welcome-logo{
  width:64px;height:64px;border-radius:18px;margin:0 auto 20px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--accent),var(--accent-2));
  color:#1a1206;font-family:var(--serif);font-weight:700;font-size:34px;
  box-shadow:0 14px 44px -12px rgba(217,142,74,.75);
}
.welcome h1{font-family:var(--serif);font-size:34px;font-weight:600;letter-spacing:.2px;margin-bottom:12px;color:var(--cream)}
.welcome p{color:var(--txt-dim);font-size:14.5px;line-height:1.65;max-width:440px;margin:0 auto 30px}
.suggestions{display:flex;flex-wrap:wrap;gap:9px;justify-content:center}
.sug{
  padding:10px 16px;border-radius:20px;border:1px solid var(--line);background:var(--panel);
  color:var(--txt-dim);font-size:12.5px;cursor:pointer;transition:.18s;font-family:var(--sans);
}
.sug:hover{border-color:var(--accent);color:var(--cream);background:rgba(217,142,74,.08);transform:translateY(-1px)}

.msg-wrap{max-width:720px;margin:0 auto;padding:14px 28px;display:flex;gap:14px;animation:rise .35s ease both}
@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.msg-wrap.user{flex-direction:row-reverse}
.avatar{
  width:32px;height:32px;border-radius:9px;flex-shrink:0;display:grid;place-items:center;
  font-size:14px;font-family:var(--serif);font-weight:700;
}
.msg-wrap.assistant .avatar{background:linear-gradient(140deg,var(--accent),var(--accent-2));color:#1a1206}
.msg-wrap.user .avatar{background:var(--panel-2);color:var(--txt-dim);border:1px solid var(--line)}
.bubble{
  padding:14px 18px;border-radius:var(--radius);font-size:14.5px;line-height:1.7;
  max-width:min(560px,82%);white-space:pre-wrap;word-wrap:break-word;
}
.msg-wrap.assistant .bubble{background:var(--panel);border:1px solid var(--line);border-top-left-radius:5px;color:var(--txt)}
.msg-wrap.user .bubble{background:linear-gradient(140deg,rgba(217,142,74,.16),rgba(196,122,56,.10));border:1px solid rgba(217,142,74,.28);border-top-right-radius:5px;color:var(--cream)}

/* typing */
.typing{display:flex;gap:5px;padding:6px 2px}
.typing i{width:7px;height:7px;border-radius:50%;background:var(--txt-mute);animation:blink 1.3s infinite}
.typing i:nth-child(2){animation-delay:.18s}
.typing i:nth-child(3){animation-delay:.36s}
@keyframes blink{0%,60%,100%{opacity:.25;transform:translateY(0)}30%{opacity:1;transform:translateY(-3px)}}

/* ---------- COMPOSER ---------- */
.composer{flex-shrink:0;padding:14px 20px 20px;background:linear-gradient(180deg,transparent,var(--bg) 40%)}
.composer-inner{
  max-width:720px;margin:0 auto;display:flex;align-items:flex-end;gap:10px;
  background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:10px 10px 10px 18px;
  box-shadow:var(--shadow);transition:.2s;
}
.composer-inner:focus-within{border-color:rgba(217,142,74,.5);box-shadow:0 12px 44px -12px rgba(217,142,74,.35)}
#input{
  flex:1;background:transparent;border:0;outline:none;resize:none;color:var(--txt);
  font-family:var(--sans);font-size:14.5px;line-height:1.6;max-height:180px;padding:8px 0;
}
#input::placeholder{color:var(--txt-mute)}
.send{
  width:40px;height:40px;border-radius:12px;border:0;cursor:pointer;flex-shrink:0;
  background:linear-gradient(140deg,var(--accent),var(--accent-2));color:#1a1206;
  font-size:20px;font-weight:700;display:grid;place-items:center;transition:.18s;
}
.send:hover{transform:scale(1.06)}
.send:disabled{opacity:.4;cursor:not-allowed;transform:none}
.hint{max-width:720px;margin:10px auto 0;text-align:center;font-size:11px;color:var(--txt-mute)}

/* ---------- PAINEL ---------- */
.panel{
  position:fixed;top:0;right:0;height:100vh;width:392px;max-width:92vw;z-index:50;
  background:linear-gradient(180deg,var(--bg-soft),#101216);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;overflow-y:auto;padding:20px;
}
.panel.open{transform:none}
.panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.panel-head h2{font-family:var(--serif);font-size:20px;font-weight:600;color:var(--cream)}
.panel-cards{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:22px}
.card{
  background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:14px;
  display:flex;flex-direction:column;gap:4px;
}
.card:first-child{grid-column:1/-1;background:linear-gradient(140deg,rgba(217,142,74,.13),var(--panel))}
.card-label{font-size:11px;color:var(--txt-mute);text-transform:uppercase;letter-spacing:.6px}
.card strong{font-family:var(--mono);font-size:20px;color:var(--cream)}
.card:first-child strong{font-size:26px;color:var(--accent)}
.card .muted{font-size:11px}
.panel-block{margin-bottom:22px}
.panel-block h3{font-size:12.5px;color:var(--txt-dim);text-transform:uppercase;letter-spacing:.7px;margin-bottom:12px;font-weight:600}
.seg{display:flex;background:var(--panel);border:1px solid var(--line);border-radius:11px;padding:4px;gap:4px;margin-bottom:10px}
.seg-btn{
  flex:1;padding:9px;border-radius:8px;border:0;background:transparent;color:var(--txt-dim);
  font-size:12.5px;font-weight:600;cursor:pointer;transition:.18s;font-family:var(--sans);
}
.seg-btn.active{background:var(--accent);color:#1a1206}
.usage-list{display:flex;flex-direction:column;gap:9px}
.usage-row{display:flex;flex-direction:column;gap:6px}
.usage-top{display:flex;justify-content:space-between;font-size:12.5px;color:var(--txt-dim)}
.usage-top .val{font-family:var(--mono);color:var(--txt)}
.usage-bar{height:6px;border-radius:5px;background:#232830;overflow:hidden}
.usage-bar i{display:block;height:100%;border-radius:5px;background:linear-gradient(90deg,var(--accent),var(--accent-2))}
.sec-list{list-style:none;display:flex;flex-direction:column;gap:10px}
.sec-list li{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--txt-dim)}
.sec-list .ok{color:var(--ok);font-weight:700}
.scrim{position:fixed;inset:0;background:rgba(0,0,0,.55);opacity:0;pointer-events:none;transition:.3s;z-index:40}
.scrim.open{opacity:1;pointer-events:auto}

@media(max-width:760px){
  .sidebar{position:fixed;z-index:45;height:100vh}
  .sidebar.hidden{margin-left:-276px}
}

/* ---------- CÉREBRO ---------- */
.panel.brain{
  width:420px;max-width:92vw;
  background:var(--panel);
  border-left:1px solid var(--line);
  transform:translateX(100%);
  transition:transform .25s ease;
  overflow-y:auto;z-index:50;
}
.panel.brain.open{transform:translateX(0)}
.brain .panel-cards{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px;margin-top:16px}
.brain .panel-block{margin-top:22px;padding:0 18px}
.brain .panel-block h3{margin-bottom:10px;color:var(--cream);font-size:14px;font-weight:600}
.brain-search{display:flex;gap:8px}
.brain-search input{flex:1;background:var(--bg);border:1px solid var(--line);color:var(--txt);
  border-radius:10px;padding:10px 14px;font-size:14px}
.brain-search button{background:var(--accent);color:#141414;border:none;border-radius:10px;
  width:40px;font-size:16px;font-weight:600}
.brain-search button:hover{background:var(--accent-2)}
.brain-results{margin-top:12px;display:flex;flex-direction:column;gap:10px}
.brain-result{background:var(--panel-2);border:1px solid var(--line);border-radius:12px;
  padding:10px 14px;font-size:13px;line-height:1.45}
.brain-result .score{color:var(--accent);font-weight:600}
.brain-result .tipo{color:var(--txt-dim);font-size:11px;text-transform:uppercase;letter-spacing:.5px}
.brain-result .relacoes{margin-top:6px;color:var(--txt-mute);font-size:12px}
.graph-wrap{position:relative;height:220px;background:var(--bg);border:1px solid var(--line);
  border-radius:14px;overflow:hidden;margin-top:8px}
#brainCanvas{position:absolute;inset:0;width:100%;height:100%}
.graph-empty{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  color:var(--txt-mute);font-size:13px}
.graph-legend{display:flex;gap:14px;margin-top:10px;font-size:11px}
.lg::before{content:'';display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:5px}
.lg-memoria::before{background:#d98e4a}
.lg-conceito::before{background:#5fbf8a}
.lg-tecnologia::before{background:#8bb4e8}
.lg-projeto::before{background:#e8b4b4}
.lg{color:var(--txt-dim)}
#brainLearn{width:100%;background:var(--bg);border:1px solid var(--line);color:var(--txt);
  border-radius:10px;padding:10px 14px;font-size:13px;resize:vertical;min-height:70px}
.brain-actions{display:flex;gap:8px;margin-top:8px}
.brain-actions input{flex:1;background:var(--bg);border:1px solid var(--line);color:var(--txt);
  border-radius:10px;padding:10px 14px;font-size:13px}
.brain-actions button{background:var(--accent);color:#141414;border:none;border-radius:10px;
  padding:10px 18px;font-weight:600;font-size:13px}
.brain-actions button:hover{background:var(--accent-2)}
.brain-msg{margin-top:8px;font-size:12px;color:var(--txt-dim);min-height:16px}
.brain-msg.erro{color:#e57373}
.brain-msg.ok{color:var(--ok)}